Valve silencer



March 18, 1924.`

w. M. TULLEY VALVE SILENCER Filed oct. .27, 1921 I Ww @wi/Waas Patented Mar. 18, 1924.

UNITED STATES WILLIAM Ml. TULLEY, OF CORPUS CHRISTI,4 TEXAS.

VALVE SILENCER.

Application filed October 27, 19(21. Serial No. 510,748.

To all whom t may concern:

Be it known that I, WILLIAM M. TULLEY,

` a citizen of the United States, residing at Corpus Christi, in the county of Neuces and State of Texas, have invented certain new and useful Improvements in Valve Silencers; and I do declare the following to be a full, clear, and e-xact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in valve mechanisms for internal combustion engines and has reference more particularly to valve silencers to prevent the undesirable noise which often occurs, particularly in connection with overhead valves.

Referred to more specifically, my invention includes a coiled cushioning spring associated with the tappets and the push-rods for continually exerting pressure on all vof the valve operating connections, so as to take up any lost motion which would otherwise cause noisy operation of the valve mechanism. I am aware that devices for this purpose have heretofore been devised but it -is the aim of my invention to provide an extremely simple and inexpensive, yet a highly eiiicient and desirable article which may be quickly and easilyattached to in- `ternal combustion engines of the common types now on the market.

With the foregoing in view, the invention resides in the novel subject. matter hereinafter described and claimed, the descriptive matter being'supplemented by the accompanying drawings.

Figure 1 is a side elevation of a portionofan automobile engine, showing a vertical sectional view of my invention attached thereto.

Figure 2 is a side elevation of the attachment removed from the push-rod.

Figure is a horizontalsectional view as indicated by line 3 3 of Fig. 2.

In the drawing .above briei'ly described. the numeral 1 designates aportion of a well known form of internal combustion engine having the usual overhead valves, one of which is designated by the reference numeral 2, said valve being closed upwardly in the usual manner b v means of a coiled spring 3. A rocker 4 is pivotally mounted upon the cylinder head and at one end is provided with a socket 5 receiving a ball G on the upper end of a push-rod 7, .said .ball preferably having a detachable threaded connection with the push-rod which also permits adjustment when necessary. The lower end of the push-rod 7 is removably received in a socket 8 in the upper end of the tappet 9 which is o erated by the well known cam l0. All of t is construction is well known and is merely shown as illustrating one form of valve mechanism in connection with which vmy invention may berused. It will be understood however, that the attachment hereinafter described is not restricted tose upon any particular make of engine and y that furthermore while the device is here shown associated with a valve push-rod andy its tappet, it might in Some instances co-act with a tappet and a valve stem with which the tappet directly contacts.

. The numeral 11 designates a thrust-collar which is preferably' secured -upon the pushrod 7 in the manner shown, said collar being in contact with the upper end of a coiled compression spring 12 whose lower end may rest directly on the tappet 9 or be provided with a cup-washer 13 resting on said stem as shown. The collar 11 is preferably provided with a non-split head 14 of hexagonal or other suitable shape to be held by a wrench. From the head 14, a tapered externally threaded sleeve 15 extends, said sleeve being radially split at several points as indicated at 16, so that by threadingfa nut 17 along the taper of thfJ sleeve, the latter may be tightly contracted and ric tionally held upon the push-rod or the like 7. l y

When the device is applied with the spring 12 under-suiicient compression, it will take up all slack in the valve-operating connections and Will consequently prevent noisy operation thereof.' i While the details disclosed are preferably followed, it is to be understood that numerous minor changes may be made within the scope of the invention as claimed.

I claim:

1. An attachmentof the character described comprising a collar externally threaded and having a longitudinally eX- vtending unthreaded rod receiving passage, said collar being split longitudinally from one end to a point adjacent the other end, the unsplit'portion of said collar being provided with wrench engaging faces and the spring for fitting in the spring seat,v a cup said collar being split from its upper end 1o Washer for engaging the other end of said to a point in spaced relation to its lower end spring, and a securing nut upon the collar and having its lower end portion provided for drawing the split portion thereof into with wrenclrengaging faces, the lowerv end 5 tight binding engagement with a valve rod. of said Collar being provided with a spring 2. An abutment for a valve silencreceiving Seat. 15 ing spring comprising a collar externally In testimony whereof I have hereunto set threaded and having -a, longitudinally eX- my hand.

tending' Unthreaded rod receiving passage, WILLIAM M. TULLEY. 

